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CDM in LSB Galaxies: Toward the Optimal Halo Profile | W.J.G. de Blok
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5 Nov 2003 | Subject: | astro-ph | Affiliation: | Cardiff University | Abstract: | Low Surface Brightness (LSB) galaxies are dominated by dark matter. High-resolution rotation curves suggest that their total mass-density distributions are dominated by constant density cores rather than the steep and cuspy distributions found in Cold Dark Matter (CDM) simulations. The data are best described by a model with a soft core with an inner power-law mass-density slope alpha = 0.2 +/- 0.2. However no single universal halo profile provides an adequate description of the data. The observed mass profiles appear to be inconsistent with LambdaCDM. | Source: | arXiv, astro-ph/0311117 | Services: | Forum | Review | PDF | Favorites |
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